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Splenocytes from immunized cotton rats secrete high amounts of IFN-γ. Spleens were harvested 8 d following viral challenge and were either cultured ex vivo in medium (filled symbols) or stimulated with 0.5 MOI RSV L19 (open symbols). IFN-γ in culture supernatants was determined by ELISA. Data are represented as mean ± SD. * indicates statistical difference (p<0.05).
